Fire retardant and/or antistatic, non-mercury catalyzed polyurethane elastomer
US9416256B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2013 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Jul 18, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fire retardant and antistatic polyurethane elastomer free of mercury and having a Shore A hardness of at least 30 is prepared from a polyol component and a prepolymer (e.g., an isocyanate) component. The polyol component comprises (A) a saturated polyester polyol of ethylene/butane/adipate of a nominal molecular weight and with a functionality of 2 or more, (B) a polyester polyol of ethylene/trimethylol propane/neopentyl adipate of nominal molecular weight and with a functionality of 2.5 or more, (C) an optional glycol chain extender, (D) an optional polymethyl alkyl siloxane defoamer, (E) an optional desiccant paste, (F) an optional polybutadiene oligomer, (G) an antistatic agent, (H) an optional surface modified fumed silica, (I) tris(2-chloro-1-methylethyl)phosphate flame retardant, (J) ammonium polyphosphate flame retardant, and (K) an organometallic catalyst other than a mercury-based organometallic catalyst, e.g., a tin-based catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.